Danger-alarm system and method for the recognition of objects in the immediate vicinity of the danger sensor

摘要

Be it with a danger sensor within a housing (3) of the danger sensor (1) arranged detector chamber (5) for the detection of a substance, which have entered into the detector chamber and / or for the detection of a in the vicinity of the danger sensor occurring change in a conventional environmental conditions as well as a method for the recognition of objects in the region of the danger sensor described. In order to recognize a near range to be realized in a technically simple manner, it is proposed that a device (8) for the recognition of objects in the vicinity of the danger sensor (1) with exactly one ultrasonic sensor (9) is provided, which is arranged to elevation angle range of at least 180° and an azimuth angle range of 360° to detect.